two years old, san quentin's new execution chamber has never been used. but that could change overnight next tuesday with albert brown, convicted of kidnapping, raping and killing a 15-year-old girl in riverside county in 1980. >> they built a new execution chamber. they did that in secret. >> reporter: the aclu says the judge hasn't approved the new death chamber or lethal injection procedures so he should not let the state rush into ruling executions. but in the ruling, the judge found a three-drug combination acceptable, so brown can choose if he wants that or one shot. concerns about lethal injection were first raised by murderer, michael morales, who averted execution. analysts are not sure why the state is pushing executions now. >> i don't think anybody could really predict what's gonna happen on tuesday night. >> reporter: if the execution goes forward, hundreds of protesters will likely gather, the last inmate put together by lethal injection shun was clarence allen in 2006, convicted of the contract killings of three people. >> there's no humane